So I had pretty much exactly the same experience you described! Finally plucked up the courage, booked a dentist appointment because I knew I had a lot of plaque. They told me I didn’t need any work done, I had a lot of plaque, generally made me feel naff, and in the end didn't really do anything at all, just told me to book to see the hygienist.
But the hygienist! They are a 10/10 for me. The first appointment was, admittedly, a bit pants. I won’t lie. But I was clear that I was a bit nervous and felt pretty embarrassed about the state of things and they were so, so nice. Offered numbing injections if I needed but in the end we got by with a bit of gel on the inflamed bits. Did a really thorough job and made recommendations.
Like you they recommended an electric toothbrush and I held off until Christmas sales to get one. It doesn’t have to be all singing and dancing but it really really does make a difference. I’ve had noticeably less plaque build up (as in barely any) compared to using a manual toothbrush.
And the nicest thing about the hygienist is that they remembered me and was so chuffed with how much better things looked since my previous visit. Now I just see them every 6-12 months rather than going to the dentist because she’ll let me know if I have issues that need a look at.
Everything crossed that you have a good hygienist that will offer the same excellent experience and support! :)